Thanks Greger
 
    I'm still unable to find any mismatch.  Can you help me here?.  If there is no mismatch is maybe a bug in SER?
     Here are more details:
     
No.     Time        Source                Destination           Protocol Info
      6 0.363947    100.100.100.246         100.100.100.239         SIP/SDP  Request: INVITE sip:005622408196@100.100.100.239, with session description
Session Initiation Protocol
    Request-Line: INVITE sip:005622408196@100.100.100.239 SIP/2.0
        Method: INVITE
        Resent Packet: False
    Message Header
        Record-Route: <sip:0299005622408196@100.100.100.246:5060;nat=yes;ftag=1587516403;lr=on>
        Via: SIP/2.0/UDP 100.100.100.246;branch=z9hG4bK895c.a98d35.0
        v: SIP/2.0/UDP 192.168.1.100:5060;rport=46127;received=100.100.100.248;branch=z9hG4bK2893084087
        f: "cl" <sip:cl@sipvoiss.desa.redvoiss.net>;tag=1587516403
            SIP Display info: "cl"
            SIP from address: sip:cl@sipvoiss.desa.redvoiss.net
            SIP tag: 1587516403
        t: <sip:0299005622408196@sipvoiss.desa.redvoiss.net>
            SIP to address: sip:0299005622408196@sipvoiss.desa.redvoiss.net
        i: e94a98aa177e8579e5242a2091c0ac5f@192.168.1.100
        CSeq: 6 INVITE
        m: sip:cl@100.100.100.248:46127
            Contact Binding: sip:cl@100.100.100.248:46127
                URI: sip:cl@100.100.100.248:46127\r
                    SIP contact address: sip:cl@100.100.100.248:46127\r
        Max-Forwards: 16
        User-Agent: endpoint-type1
        Allow: INVITE, ACK, OPTIONS, CANCEL, BYE, REFER
        Supported: timer, replaces
        c: application/sdp
        Accept: application/sdp
        Content-Length: 294
    Message body
        Session Description Protocol
 
No.     Time        Source                Destination           Protocol Info
      7 0.438768    100.100.100.239         100.100.100.246         SIP      Status: 100 Trying
Session Initiation Protocol
    Status-Line: SIP/2.0 100 Trying
    [...]
 
No.     Time        Source                Destination           Protocol Info
      8 1.263245    100.100.100.239         100.100.100.246         SIP/SDP  Status: 183 Session Progress, with session description
Session Initiation Protocol
    Status-Line: SIP/2.0 183 Session Progress
        Status-Code: 183
        Resent Packet: False
    Message Header
        Via: SIP/2.0/UDP 100.100.100.246;branch=z9hG4bK895c.a98d35.0
        Via: SIP/2.0/UDP 192.168.1.100:5060;rport=46127;received=100.100.100.248;branch=z9hG4bK2893084087
        From: "cl" <sip:cl@sipvoiss.desa.redvoiss.net>;tag=1587516403
            SIP Display info: "cl"
            SIP from address: sip:cl@sipvoiss.desa.redvoiss.net
            SIP tag: 1587516403
        To: <sip:0299005622408196@sipvoiss.desa.redvoiss.net>;tag=9146c297a4
            SIP to address: sip:0299005622408196@sipvoiss.desa.redvoiss.net
            SIP tag: 9146c297a4
        <sip:0299005622408196@sipvoiss.desa.redvoiss.net>
        Call-ID: e94a98aa177e8579e5242a2091c0ac5f@192.168.1.100
        CSeq: 6 INVITE
        Supported: timer, replaces, early-session
        User-Agent: AddPac SIP Gateway
        Contact: sip:005622408196@100.100.100.239
            Contact Binding: sip:005622408196@100.100.100.239
                URI: sip:005622408196@100.100.100.239\r
                    SIP contact address: sip:005622408196@100.100.100.239\r
        Content-Type: application/sdp
        Content-Length: 247
        Record-Route: <sip:0299005622408196@100.100.100.246:5060;nat=yes;ftag=1587516403;lr=on>
    Message body
        Session Description Protocol
 
No.     Time        Source                Destination           Protocol Info
      9 1.265778    100.100.100.246         100.100.100.248         SIP/SDP  Status: 183 Session Progress, with session description
Session Initiation Protocol
    Status-Line: SIP/2.0 183 Session Progress
        Status-Code: 183
        Resent Packet: False
    Message Header
        Via: SIP/2.0/UDP 192.168.1.100:5060;rport=46127;received=100.100.100.248;branch=z9hG4bK2893084087
        From: "cl" <sip:cl@sipvoiss.desa.redvoiss.net>;tag=1587516403
            SIP Display info: "cl"
            SIP from address: sip:cl@sipvoiss.desa.redvoiss.net
            SIP tag: 1587516403
        To: <sip:0299005622408196@sipvoiss.desa.redvoiss.net>;tag=9146c297a4
            SIP to address: sip:0299005622408196@sipvoiss.desa.redvoiss.net
            SIP tag: 9146c297a4
        <sip:0299005622408196@sipvoiss.desa.redvoiss.net>
        Call-ID: e94a98aa177e8579e5242a2091c0ac5f@192.168.1.100
        CSeq: 6 INVITE
        Supported: timer, replaces, early-session
        User-Agent: AddPac SIP Gateway
        Contact: sip:005622408196@100.100.100.239
            Contact Binding: sip:005622408196@100.100.100.239
                URI: sip:005622408196@100.100.100.239\r
                    SIP contact address: sip:005622408196@100.100.100.239\r
        Content-Type: application/sdp
        Content-Length: 247
        Record-Route: <sip:0299005622408196@100.100.100.246:5060;nat=yes;ftag=1587516403;lr=on>
    Message body
        Session Description Protocol
 
No.     Time        Source                Destination           Protocol Info
     10 6.039661    100.100.100.248         100.100.100.246         SIP      Request: CANCEL sip:0299005622408196@sipvoiss.desa.redvoiss.net
Session Initiation Protocol
    Request-Line: CANCEL sip:0299005622408196@sipvoiss.desa.redvoiss.net SIP/2.0
        Method: CANCEL
        Resent Packet: False
    Message Header
        v: SIP/2.0/UDP 192.168.1.100:5060;branch=z9hG4bK2893084087
        f: "cl" <sip:cl@sipvoiss.desa.redvoiss.net>;tag=1587516403
            SIP Display info: "cl"
            SIP from address: sip:cl@sipvoiss.desa.redvoiss.net
            SIP tag: 1587516403
        t: <sip:0299005622408196@sipvoiss.desa.redvoiss.net>
            SIP to address: sip:0299005622408196@sipvoiss.desa.redvoiss.net
        i: e94a98aa177e8579e5242a2091c0ac5f@192.168.1.100
        CSeq: 6 CANCEL
        Max-Forwards: 70
        User-Agent: endpoint-type1
        l: 0
 
No.     Time        Source                Destination           Protocol Info
     11 6.042124    100.100.100.246         100.100.100.239         SIP      Request: CANCEL sip:005622408196@100.100.100.239
Session Initiation Protocol
    Request-Line: CANCEL sip:005622408196@100.100.100.239 SIP/2.0
        Method: CANCEL
        Resent Packet: False
    Message Header
        Record-Route: <sip:100.100.100.246;ftag=1587516403;lr=on>
        Via: SIP/2.0/UDP 100.100.100.246;branch=z9hG4bK895c.a98d35.0
        v: SIP/2.0/UDP 192.168.1.100:5060;rport=46127;received=100.100.100.248;branch=z9hG4bK2893084087
        f: "cl" <sip:cl@sipvoiss.desa.redvoiss.net>;tag=1587516403
            SIP Display info: "cl"
            SIP from address: sip:cl@sipvoiss.desa.redvoiss.net
            SIP tag: 1587516403
        t: <sip:0299005622408196@sipvoiss.desa.redvoiss.net>
            SIP to address: sip:0299005622408196@sipvoiss.desa.redvoiss.net
        i: e94a98aa177e8579e5242a2091c0ac5f@192.168.1.100
        CSeq: 6 CANCEL
        Max-Forwards: 16
        User-Agent: endpoint-type1
        l: 0
 
No.     Time        Source                Destination           Protocol Info
     12 6.042182    100.100.100.246         100.100.100.248         SIP      Status: 200 canceling
Session Initiation Protocol
    Status-Line: SIP/2.0 200 canceling
        Status-Code: 200
        Resent Packet: False
    Message Header
        v: SIP/2.0/UDP 192.168.1.100:5060;branch=z9hG4bK2893084087;rport=46127;received=100.100.100.248
        f: "cl" <sip:cl@sipvoiss.desa.redvoiss.net>;tag=1587516403
            SIP Display info: "cl"
            SIP from address: sip:cl@sipvoiss.desa.redvoiss.net
            SIP tag: 1587516403
        t: <sip:0299005622408196@sipvoiss.desa.redvoiss.net>;tag=91e558155f4f8a61296d9268e8f451e8-57f4
            SIP to address: sip:0299005622408196@sipvoiss.desa.redvoiss.net
            SIP tag: 91e558155f4f8a61296d9268e8f451e8-57f4
        i: e94a98aa177e8579e5242a2091c0ac5f@192.168.1.100
        CSeq: 6 CANCEL
        Server: Sip EXpress router (0.9.3 (i386/linux))
        Content-Length: 0
        Warning: 392 100.100.100.246:5060 "Noisy feedback tells:  pid=5532 req_src_ip=100.100.100.248 req_src_port=46127 in_uri=sip:0299005622408196@sipvoiss.desa.redvoiss.net out_uri=sip:0299005622408196@sipvoiss.desa.redvoiss.net via_cnt==1"
 
No.     Time        Source                Destination           Protocol Info
     13 6.092090    100.100.100.239         100.100.100.246         SIP      Status: 200 OK
Session Initiation Protocol
    Status-Line: SIP/2.0 200 OK
        Status-Code: 200
        Resent Packet: False
    Message Header
        Via: SIP/2.0/UDP 100.100.100.246;branch=z9hG4bK895c.a98d35.0
        Via: SIP/2.0/UDP 192.168.1.100:5060;rport=46127;received=100.100.100.248;branch=z9hG4bK2893084087
        From: "cl" <sip:cl@sipvoiss.desa.redvoiss.net>;tag=1587516403
            SIP Display info: "cl"
            SIP from address: sip:cl@sipvoiss.desa.redvoiss.net
            SIP tag: 1587516403
        To: <sip:0299005622408196@sipvoiss.desa.redvoiss.net>
            SIP to address: sip:0299005622408196@sipvoiss.desa.redvoiss.net
        Call-ID: e94a98aa177e8579e5242a2091c0ac5f@192.168.1.100
        CSeq: 6 CANCEL
        User-Agent: AddPac SIP Gateway
        Content-Length: 0
        Record-Route: <sip:100.100.100.246;ftag=1587516403;lr=on>
 
No.     Time        Source                Destination           Protocol Info
     14 6.102719    100.100.100.239         100.100.100.246         SIP      Status: 487 Request Terminated
Session Initiation Protocol
    Status-Line: SIP/2.0 487 Request Terminated
        Status-Code: 487
        Resent Packet: False
    Message Header
        Via: SIP/2.0/UDP 100.100.100.246;branch=z9hG4bK895c.a98d35.0
        Via: SIP/2.0/UDP 192.168.1.100:5060;rport=46127;received=100.100.100.248;branch=z9hG4bK2893084087
        From: "cl" <sip:cl@sipvoiss.desa.redvoiss.net>;tag=1587516403
            SIP Display info: "cl"
            SIP from address: sip:cl@sipvoiss.desa.redvoiss.net
            SIP tag: 1587516403
        To: <sip:0299005622408196@sipvoiss.desa.redvoiss.net>;tag=9146c297a4
            SIP to address: sip:0299005622408196@sipvoiss.desa.redvoiss.net
            SIP tag: 9146c297a4
        <sip:0299005622408196@sipvoiss.desa.redvoiss.net>
        Call-ID: e94a98aa177e8579e5242a2091c0ac5f@192.168.1.100
        CSeq: 6 INVITE
        User-Agent: AddPac SIP Gateway
        Content-Length: 0
 
No.     Time        Source                Destination           Protocol Info
     15 6.103011    100.100.100.246         100.100.100.239         SIP      Request: ACK sip:005622408196@100.100.100.239
Session Initiation Protocol
    Request-Line: ACK sip:005622408196@100.100.100.239 SIP/2.0
        Method: ACK
        Resent Packet: False
    Message Header
        Via: SIP/2.0/UDP 100.100.100.246;branch=z9hG4bK895c.a98d35.0
        f: "cl" <sip:cl@sipvoiss.desa.redvoiss.net>;tag=1587516403
            SIP Display info: "cl"
            SIP from address: sip:cl@sipvoiss.desa.redvoiss.net
            SIP tag: 1587516403
        i: e94a98aa177e8579e5242a2091c0ac5f@192.168.1.100
        To: <sip:0299005622408196@sipvoiss.desa.redvoiss.net>;tag=9146c297a4
Thanks
 
Ricardo.-